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<h2 class="title">
<a id="_one_final_modification"></a>One Final Modification<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch-definitive-guide/edit/2.x/300_Aggregations/23_extra_metrics.asciidoc">edit</a>
</h2>
</div></div></div>
<p>Just to drive the point home, let’s make one final modification to our example
before moving on to new topics.  Let’s add two metrics to calculate the min and
max price for each make:</p>
<div class="pre_wrapper lang-sense">
<pre class="programlisting prettyprint lang-sense">GET /cars/transactions/_search
{
   "size" : 0,
   "aggs": {
      "colors": {
         "terms": {
            "field": "color"
         },
         "aggs": {
            "avg_price": { "avg": { "field": "price" }
            },
            "make" : {
                "terms" : {
                    "field" : "make"
                },
                "aggs" : { <a id="CO191-1"></a><i class="conum" data-value="1"></i>
                    "min_price" : { "min": { "field": "price"} }, <a id="CO191-2"></a><i class="conum" data-value="2"></i>
                    "max_price" : { "max": { "field": "price"} } <a id="CO191-3"></a><i class="conum" data-value="3"></i>
                }
            }
         }
      }
   }
}</pre>
</div>
<div class="sense_widget" data-snippet="snippets/300_Aggregations/20_basic_example.json"></div>
<div class="calloutlist">
<table border="0" summary="Callout list">
<tr>
<td align="left" valign="top" width="5%">
<p><a href="#CO191-1"><i class="conum" data-value="1"></i></a></p>
</td>
<td align="left" valign="top">
<p>We need to add another <code class="literal">aggs</code> level for nesting.</p>
</td>
</tr>
<tr>
<td align="left" valign="top" width="5%">
<p><a href="#CO191-2"><i class="conum" data-value="2"></i></a></p>
</td>
<td align="left" valign="top">
<p>Then we include a <code class="literal">min</code> metric.</p>
</td>
</tr>
<tr>
<td align="left" valign="top" width="5%">
<p><a href="#CO191-3"><i class="conum" data-value="3"></i></a></p>
</td>
<td align="left" valign="top">
<p>And a <code class="literal">max</code> metric.</p>
</td>
</tr>
</table>
</div>
<p>Which gives us the following output (again, truncated):</p>
<div class="pre_wrapper lang-js">
<pre class="programlisting prettyprint lang-js">{
...
   "aggregations": {
      "colors": {
         "buckets": [
            {
               "key": "red",
               "doc_count": 4,
               "make": {
                  "buckets": [
                     {
                        "key": "honda",
                        "doc_count": 3,
                        "min_price": {
                           "value": 10000 <a id="CO192-1"></a><i class="conum" data-value="1"></i>
                        },
                        "max_price": {
                           "value": 20000 <a id="CO192-2"></a><i class="conum" data-value="1"></i>
                        }
                     },
                     {
                        "key": "bmw",
                        "doc_count": 1,
                        "min_price": {
                           "value": 80000
                        },
                        "max_price": {
                           "value": 80000
                        }
                     }
                  ]
               },
               "avg_price": {
                  "value": 32500
               }
            },
...</pre>
</div>
<div class="calloutlist">
<table border="0" summary="Callout list">
<tr>
<td align="left" valign="top" width="5%">
<p><a href="#CO192-1"><i class="conum" data-value="1"></i></a><a href="#CO192-2"></a></p>
</td>
<td align="left" valign="top">
<p>The <code class="literal">min</code> and <code class="literal">max</code> metrics that we added now appear under each <code class="literal">make</code></p>
</td>
</tr>
</table>
</div>
<p>With those two buckets, we’ve expanded the information derived from this query
to include the following:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
There are four red cars.
</li>
<li class="listitem">
The average price of a red car is $32,500.
</li>
<li class="listitem">
Three of the red cars are made by Honda, and one is a BMW.
</li>
<li class="listitem">
The cheapest red Honda is $10,000.
</li>
<li class="listitem">
The most expensive red Honda is $20,000.
</li>
</ul>
</div>
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